Viessmann Vitodens 050-W Installation And Service Instructions Manual page 65

Connection and wiring diagrams
B Gas pressure switch (accesso-
ries)
C
Outside temperature sensor
(accessories)
D Room temperature controller
(accessories)
E Time switch or wireless receiver
(accessories)
(cont.)
F Jumper, remove when connecting
room temperature controller
A1 Main PCB
A3 Programming unit
S1 ON/OFF switch
X ... Electrical interface
Designs
65